Weinstein -- the founder of Saba Capital and former co-head of credit trading at Deutsche Bank -- made an offer for Clark's apartment on the top floor (the 12th) at 907 Fifth Avenue overlooking Central Park. The unit's asking price was $24 million.

According to the report, Weinstein has signed a contract and is currently awaiting his interview with the co-op board.

Meanwhile, the Qatari prime minister's $31.5 million bid for the other two apartments was rejected and he wasn't even granted an interview with the co-op's board, the report said.